To my recollection, they mentioned the IP address and I recall the encryption key, but I think that had to do with the IP address. Another thing, the way technology is moving they have apps now that in order to download them you will have to give permission to allow them to access photos, etc., even keeping your phone on. If they can keep your phone on then I am sure an IP address can be changed without the internet on the phone being disconnected.
You being in the IT technology industry, you probably know more on this topic, but remember, who would have though that one day man would go to the moon.
